Apparatus and method for sensing the fluid level in a mixing device
US6485171B1 · kind B1 · utility
9Cited by
28References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1999 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Dec 13, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/226
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor for detecting the level of circulating fluid in a tank comprises a paddle blade disposed at a particular height and oriented generally radially from a rotating shaft in the tank. A sensing device, such as a strain gauge, is attached to the paddle blade to detect when the paddle blade is in at least one of a normal and a displaced position, thereby indicating that fluid is absent or present at a particular level. Additional sensors may be used in the same tank to provide fluid level feedback at more than one height.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.